Note Taking Guide - Program 1502
TYPES OF NUCLEAR REACTIONS
natural transmutation - Uranium spontaneously decays.
U 
238
92
Th  24 He
234
90
artificial transmutation - bombardment of a stable isotope to force it to decay.
14
7
N  24 He  11 p ______
nuclear “
bullet”
When the bullets are ___ charged, they are ____________ by the nucleus
they are bombarding. To overcome the repulsions, they must be
_______________ to very high speeds by ______________ accelerators.
nuclear fission 1
0
Heavy nuclei are bombarded with neutrons and split.
142
91
1
n 235
U

Ba

Kr

3(
92
56
36
0 n ) E
Mass of particles produced is slightly ______ than the mass of the reactants.
This mass is converted into ___________. (E =
)
critical mass: ____________ mass of _______________ material
required
for a ___________ ____________
nuclear reactors: control fission ___________ reactions to produce energy
dangers:
nuclear fusion -
combination of _____ nuclei into ____ with release of _____
2
1
H 13 H  24 He 01n E
Mass of particles produced is much ______ than the mass of the __________.
This _______ is converted into energy. (E =
)
On back, list advantages of and problems with using fusion as an energy source.
PHYSICSFundamentals
© 2004, GPB
15-03